Esperanta-angla vortaro »

magmaj petroj signifas en angla

EsperantaAngla
magmaj petroj noun

igneous rock(one of the major groups of rock that makes up the crust of the Earth)
noun
[UK: ˈɪɡ.nɪəs rɒk] [US: ˈɪɡ.niəs ˈrɑːk]

Via historio